Let me share what I know about this, melissa-lee2368.
Currently, we cannot create journal entries when using the QuickBooks Online mobile app. You can use this link to see what you can do on the mobile app: Compare mobile app features.
You can log in to your account using a mobile browser (Desktop mode) or through a computer browser. From there, you can create a journal entry: Create a journal entry in QuickBooks Online.
We'll be right here if you need anything else.
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